Windmill-pump stroke-regulator.



A .PATBNTED AUG. 18, 190s. N. s. LOWRIE a. W. W. voTAW. WINDMILL PUMP STROKE REGULATOR.

APPLICATION FILED JAN. 28,1903. I

No MODEL.

@mi hmmm ivo. 7365530.

NiTnD STATES Iatented August 18, 1903;

PATENT Oi-rrclav NEWELL S. LOWRIE AND WILLIAM W. VOTAW, OF LINCOLN, NEBRASKA.

WINDMILL-PUMP STROKE-REGULATOR.

SPECIFICATION forming part or" Letters Patent No. 736,530, dated August 18, 1903. Application filed January 28, 1.903. Serial No. 140,930. (No model.)

T0 a/ZZ whom t may concern,.-

Be it known that we,NEwELL S. LOWRIE and WILLIAM W. Vo'rnw, citizens of the United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in Windmill-Pump Stroke-Regulators; and we do hereby declare the following to be 'a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to stroke-regulators for windmill pump-rods, andis an improvement on the construction of stroke-regulating mechanism for which United States Letters Patent No. 689,500 were issued on the 24th day of December, 1901, to Newell S. Lowrie. y

The nature of the present will be readily comprehended, reference being had to the following detailed description and to the accompanying drawings, illustrating the improvements in their preferred form of embodiment, it being understood that various modifications may be made therein without departing from the spirit of the invention as deiined by the concluding claims.

In the drawings, Figure 1 is a vertical sectional view of a windmill top equipped with la stroke-regulator embodying the improvements. Fig. 2 is a detail View of the crankwheel and parts carried thereby.

Referring to the drawings by numerals, 1 denotes the windmill top, having a laterallyextending frame 2 in boxes 3 3, on which is journaled the windmill-shaft 4. Fixed to the inner end of the shaft is a crank-wheel 5, having a peripheral flange 6 and a curved slot 7. "Loosely encircling the shaft toward its inner end is a sleeve 8, to one end of which is keyed or otherwise attached a cam 9', having a peripheral flange 10. This cam preferably occupies the recess of the wheel formed by the iiange 6, and between'the body of the wheel and the cam is an arm 11, pivoted at one end by a pin l2 to the wheel and having at its free end flanges 13 and 14, between which is loosely confined the flan ge 10 ofthe4 cam.

The crank-pin 15, to which the pump-rod pitman is attached, is fixed to the free end improvements.

of the arm 11 and projects through the slot 7 and beyond the outer face of the wheel, as shown in Fig. 1. The curved slot 7 is drawn by a radius of which the pin 12 is the center.

The drawings show in full lines the position of the parts which will give the greatest length of stroke to the pump-rod. The dotted lines in Fig. 2 indicate the position of the parts for the minimum length of stroke. Obviously the change of position of the crankpin is eiected by the rotation of the cam and the engagement of the cam-flange with the flanges on the pin-carrying arm 11.

The purpose of the invention is to provide means which will produce a long stroke of the pump-rod during high-wind pressures and a short stroke while light winds prevail. This is accomplished by utilizing the windpressures to effect the changes in position of the crank-pin. A wind-vane 16 is pivoted at its lower end by a pin 17 to the frame 2 and is intermediately connected by a pin 18, which engages a slot 2 in a ring 1'9, which loosely encircles a sleeve 20, rotatable with but slidable on the shaft 4, preferably through the medium of a spline 2l. The sleeve 2O is recessed to loosely receive the other end of the sleeve 8, and extending from the inner side of the sleeve 20 is a pin 22, which engages a groove 23, formed spirally about the outer side of the sleeve 8. i

Extending upwardly from the journal-box 3 is a post 24, and attached at its ends respectively to the post and the vane is a coiled spring 25.

In operation movement of the vane in either direction eiects through the engagement of the pin 22 on the sliding sleeve with the spiral groove in the sleeve the rotation of the latter, and with it the cam, and the change of position of the crank-pin to vary the stroke of the pump-rod is attained by the movement of the form the heavier work when the wind-presico sure is high and the lighterAwork when the pressure is light.

We claim as our invention-- 1. A stroke-regulator for windmills comprising a crank-wheel, a member pivoted on said wheel and carrying the crank-pin, a rotatable member connected with the pivoted member to swing the latter, and a wind-vane pivoted to have a rocking movement and connected with the rotatable member to rotate it.

2. A stroke-regulator for Windmills comprising a crank-wheel, a member pivoted on said wheel and carrying the crank-pin, a cam connected with the member to swing the latter and a wind-vane pivoted to have a rocking movement and operatively connected with the cam to rotate it.

3. A stroke-regulator for windmills comprising a crank-wheel, an arm pivoted on said wheel and carrying the crank-pin, a cam conneoted with the arm to swing the latter, a rotatable sleeve fixed to the cam and provided prisng a crank-wheel, a wind-vane, a sleeve slidable with the movements of the vane said sleeve carrying a pin, a second sleeve rotatably supported and having a spiral groove engaged by said pin, a crank-pin at the crankwheel,and means between the rotatable sleeve and crank-pin for changing the position of the latter.

5. A stroke-regulator for windmills, comprising a crank-wheel, an arm pivoted thereto and carrying the crank-pin, a cam having a flange engaging projections on the arm to move the latter in the rotation of the cam, a rotatable sleeve ixed to the cam and provided with a spiral groove, a slidable sleeve recessed to receive the grooved portion of the rotatable sleeve and having a pin engaging said groove, and a spring-retracted wind-vane connected with the slidable sleeve.

In testimony whereof we affix our signatures in presence of two witnesses.

NEVVELL S. LOWRIE. WILLIAM W. VOTAW.

Witnesses:A

THOMAS M. LAWRENCE, CHARLES E. CHowINs. 

